While driving northbound
from Clackamas to Troutdale, Oregon, I witnessed a large, very flat object,
hovering in mid air. The size of the object isn't clear to me, but seemed to be
the size of a medium size jet plane.

It was very thin, almost
looked flat and was bright white or silver in color.

The object seemed to move
very effortlessly and was not in any known flight path that I have seen in the
area. It seemed to be gravitating towards other aircraft in the area but never
got too close.

I watched for roughly 10
minutes before arriving at a location I could pull over and take a photograph.

At this point I had lost
sight of the object for less than 30 seconds, since the last point it went out
of view because of trees. It had completely disappeared upon my arrival to my
destination.

Was not an airplane or
helicopter. Looked nothing like any drones I had ever seen.

95 degrees, clear skies
and sunny.

((NUFORC Note: We spoke
via telephone with the witness, and he seemed to us to be quite eloquent and
sober-minded. We suspect he is a very good witness. PD))